Forging machine



July 31, 1928. 1,679,129

F. HALLECK FORGING MACHINE Filed July so) 1 5 Sheets-Sheet 1 July 31, 1928. 1,679,129

F. A. HALLECK FORGIENG MACHINE Filed July so 1920 5 Sheets-Sheet 2 July 31, 1928. 1,679,129

F. A. HALLECK FORGING MACHINE.

Filed July so, 1 s Sheets-Sheet 5 July 31, 1928.

' F; A. HALLECK' FORGING MACHINE Filed July 30- 1920 5 Sheets-Sheet 4 l llllllllln lll llll] III July 31, 1928. 1,679,129

F. A. HALLECK FORGING MACHINE Filed July 50 1920 5 Sheets-Sheet 5 Ill 14 w ll Patented July 31, 1928.

UNITED STATES 1,679,129 PATENT orrrcu.

FRANK A. HALLECK, OF CHECAGQILLZNOIS, ASSIGNOR- TO SULLIVAN MACHINERY COMPANY, A CORFORATION OF MASSAGHUSETTS.

FORGING MACHINE.

Application filed July 30,

My invention relates to forging machines and more particularly to that class of forging machines which are used for the purpose of sharpening the steels and other tools 5 for use in mining and stone working operafrom one operation to the next. A still fur-.

ther object is to provide an improved construction wherein all the parts are readily accessible and operable, and wherein lubrication of the moving parts and cleansing of clamping and swaging surfaces is automatically effected. A still further object is to provide a. mechanism in which accidental operation of one or more of a plurality of closely arranged parts by accidental manipulation of its controlling means is prevented, and wherein the danger due to such accidental operation is accordingly eliminated. Further objects of my invention will appear in the course of the following specification.

Inthe accompanying drawings I have shown for purposes of illustration one embodiment which my invention mayassume in practice.

In these drawings,

Fig. 1 is 'a side elevation of the illustrative form of my improved forging machine with the side plate removed and with internal parts broken away to show the details of construction.

Fig. 2 is a front elevation of my machine with a portion of the sit aging mechanism shown in vertical central section.

Fig. 3 is a partial central longitudinal section on line 3-3 of Fig. 2 showingvarious details of construction, parts being broken away to show additional details.

Fig. i is a detail of my steel blowing arran gement.

Fig. 5 is a top plan view of the entire machine.

Fig. 6 is a transverse vertical section through my illustrative embodiment, the section being taken on line 66 of Figs. 1 and 5.

hold the steel 1920. Serial N0. 400,121.

shows details of the pin pulling mechanism.

Fig. 8 is a fragn'ientary view in elevation of my swaging die controlling mechanism.

Fig. 9 is a section on line 9-9 of Fig. .5.

Fig. 10 is a detail sectional view through the hole opcning motor control valve.

Fig. 11 is a section on the line -1111 of Figs. 1 and 9 showing details of fluid dis tribution.

Fig. 12 is a central section through my foot controlled throttle valve.

In this illustrative construction there are provided devices for performing the following operations and for purposes of simplicity of understanding, these several devices will later be taken up separately- Mechanism is provided for the swaging of the blank steel or a worn steel to approxi mately a finished form, this being generally indicated by the numeral 10. Dolly mechanism for the purpose of sharpening the cutting edges of the steel and forming them to finished shape is shown and generally indicated by the numeral 30. Cooperating to during this operation I have shown clamping mechanism generally indicated by 60. Secured to a suitable part of the clamping mechanism, is a gaging mechanism for the purpose of providing the dc sired gage and the double taper which has been found especially desirable in various bits. This mechanism is generally indicated by the numeral 90. Suitable pin pulling, hole blowing, and lubricating mechanisms are also provided and will be discussed at a later time.

As a preliminary step in the description of the device, attention is directed to the fact that a frame 1 is provided on which are mounted the several mechanisms previously mentioned, the frame being of hollow construction as indicated at 2 and having an interior chamber 3 forthe storage of lubricant and exhaust operating fluid. The remainder of the interior of the frame serves as an exhaust means. Mounted at what may be termed the forward side of the frame, i. e., the side adjacent which the operator will stand in employing the forging machine, and to one side of the center line thereof, I have provided a swaging mechanism designated generally as above stated by the numeral 10. Thls swaging mechanism comprises a pair of swaging dies 11 i and 12 of which the former stat onary and Fig. 7 is a section on line 7-7 of Fig. 5 and 110 Ill I oi) the latter is movable. The die 11 is held in a suitable rigid clamping means 13 upon an anvil block which is held to the base 1 by means of a suitable bolt 13 cooperating with a spring 13 which is arranged between the nut of the bolt and the lower side of the top of the frame. The die 12 is reciprocable in suitable guides 1d formed in the frame 15 of the swaging mechanism, and springs 16 are provided for the purpose of normally holding the movable die in raised position. These springs are arranged upon a transverse shaft 17 mounted in a suitable bearing 18 formed on the side of the support member 15 and are of spiral construction and have a tendency to raise the die member 12 and hold it in fixed position at a certain dis tance above the lower die. Cooperating with the shaft 17 is a handle 19 which serves to place the springs 16 under compression, this being accomplished by forcing the handle downward to the position indicated in Fig. 2, at which time a projecting lug 21 thereon may be caught beneath a lug 20 on the frame member 15 and held until the handle 19 by a slight lateral movement is released. As a result of this construction it will be evident that by placing the handle 19 in the position shown in Big. 2, the spring 16 may be caused to normally maintain the die 12 in raised position. However, when the lug 21 is released from the lug 20 and the handle raised to a horizontal position, it will be evident that the compression of the springs will be entirely relieved, and that by moving the free ends of springs 16 sidewise the extreme ends thereof, which are bent, may be freed from the sockets in the sides of die member 12 and the die mem ber made entirely free. Cooperating with the die 12 and adapted to impart a series of blows thereto, a piston 22 reciprocable in a well-ki'iown manner under control of any suitable valve mechanism generally indicated by 2%. As it has been found in practice that it is preferable to maintain the die 12 in contact with the work at all times and to hammer directly thereon instead of cansing it to reciprocate between each blow of the hammer, I have provided an annular cylinder 25 surrounding the guiding means for the piston 22 and in this cylinder is lo cated an annular piston 25 which is adapted upon admission of pressure to the upper surface thereof to overcome the lifting tendency of the springs 16 and to force and maintain the die 12 in engagement with the work. Operating fluid is supplied to the cylinder 25 by way of a passage 26 and fluid is conducted both to this passage and to the valve mechanism 2 1 by means of a pipe 27 whose connection in the fluid system of the entire machine will be later described. This im proved die controlling mechanism is the invention of one Wade H. Wineman.

For the purpose of operating upon the steels prior to the gaging thereof in order to impart a sharp cutting edge thereto, 1 have provided a dolly mechanism generally indicated by the numeral 30. This mechanism is actuated by a motor which is generally indicated by the numeral 31 and in the cylinder 32 of which there reciprocates a piston 33 having an extension 5-); acting on a dolly which cooperates with suitable clamping dies 36 and 37 to form the proper desired cutting edges on a steel. The dolly 35, as illustrated, is preferably rectangular in shape adjacent its rear end and is guided in suitable stationary guides 38 formed in the frame, being maintained in these guides and additionally guided by a pivoted member 39. This member is pivoted to the frame at 4:0 and at itsforward end is provided with a log 41 cooperating with a spring 4-2 held in fixed position on the upper member of my clamping die, which will hereafter be described, by means of a bolt 13. The lower die 37 which is mounted in a suitably undercut socket 14 formed in the frame is adapted to be held therein by means of a pin 45 which cooperates with a recess 16 formed in the end of die 37. t the rear end of the pin 45 an enlarged plunger 41? is arranged and this plunger is reciprocable in an enlarged bore l8 in the frame. A spring 49 lodged in the bore normally tends to retract the pin and release the lower die 37. Cooperating with theplunge-r l? is an arm 50 mounted upon a shaft 51 which is pivoted in a suitable bearing upon the rear end of frame 1. The shaft 51 is bored transversely at one end of the bearing 52 and the inner end of a spiral spring 52) is passed through the bore. The free end of the spring member is passed forward and engages a socket 5-1: in the side of the frame. The operation of this spring is to cause the arm 50 to enact with the plunger 4L7, over-- coming thereby the pressure of the spring 49 and forcing the pin 45 forward to eng the lower die 37 and hold it firmly in position. Cooperating ith the dolly mechanism and adapted to raise and lower the movable die 36 is a vise er clamping mechanism generally indicated :y 60. This clamping mechanism comprises a movable member 61 (Fig. 6) cooperating with a stationary portion 62 arranged at the upper side of the frame 1. Cooperating with the movable member (51. and rigidly secured thereto are a pair of vise rods 63 which at their lower ends are rigidly mounted in any suitable manner in a cross head 6% which is guided as best shown in 3 inv the interior of the frame. Arranged at the upper side of the cross head 6e are a pair of lugs or ears 65 through which a transverse pivot 66 extends, and between the bearings and journaled upon said pivot is pivotally ion mounted the lower arm of ny clamp actuating mechanism, this arm being designated 68. Between the lower side of the arm (38 and the cross head (is is arranged a bearing 69 to take the pressure oil the pivot pin 66. 'Atits upper end the lower arm provided with a fork 68 which is provided with bores 70 to receive a pin 71 connecting them to the actuating mechanism of the clamping mechanism as will later be described. Approximately midway between the pin 71 and the pivot pin 6G, but elf-set from the plane containing the axes of these pins, is a second pin 72 passing through the fork 68 of the lower arm and pivoted to the lower end of the u 3 Der member 73 of in clam mechanism. The upper end of the member 73 rotatably engages a suitable socket 7 4; in the lower portion of th top of the framel, and to maintain the same in ope: .tive relation to this bearing, I have provided a pair of links 75 cooperating with a pin 76 passing through the top of the; member and do with a. similar pin 77 passing through an opening in a depending portionof the frame 1, designated here as 78. To actuate the clamping mechanism, I have provided a.

fluid actuated motor generally designated 80 and comprising a pair of cylinders 81 and 82 of differential bore in which are reciprocable respectively pistons 83 and 84-. Between the pistons 83 and S is arranged a connecting member which is in the form of a pair of parallel side members 85 between which the parts 68 and T3 are received.

These side members are suitably bored to receive the pin 71 which transmits the power from the motor 80 to the clan'rping mechanism. Formed on the rear end of the piston 84: is a cylindrical boss Sat forming a piston adapted to cooperate with a cylindrical recess 82 forming an enlarged continuation of the bore The piston Ell and cylinder 82. coop-crate during the extreme right hand movement of the piston 83 to act as a dashpot and thereby allow the pin 71 to grad rally engage the recess within the link 73, thus eliminating any impact between the various piston or link elements. It will be obviousthat as the pistons 83 and -84 move to the left in Fig. 3, by the cooperation of the arms 68 and 78 the cross head 64 and accordingly the clamp member 61 will be raised and that upon reverse movement of the pistons the lowering of the cross head and the operation of the clamp to clamp' tg position will take place.

The fluid distri bution-to the clamping motor and the lubrication of the clamping mechanism will be hereafter explained. It should be noted, however, that the upper die 36 cooperating with the dolly is held in a position relative to the member 61 by an under cut socket and by a pin .86 or bolt and that the member 43 to which the spring 42 is secured, is adapted to be raised and lowered to release the dolly holding and guiding member 39 when the clamping device is in release position.

As is well known, there are some classes of bits which require the formation of a double ta er on the wings thereof, and it is a further familiar fact that in all drilling operations, it is highly advantageous to provide very accurate gaging of the bits. With the purpose in view of providing means for gaging the bits very accurately and forming double tapers, I have arranged between the members of the clamp a pair of gaging dies the type shown in my copending application, Serial No. 179,952, filed July 11, 1917, now issued as Pat. llo. 1,461,011, this being generally indicated by the numeral 90, but the adjusting mechanisms herein are turned into a substantially horizontal plane."

v In the forming of drill steels theoperation of forming the shank tends to close the hole for cleansing fluid formed therein so that it is frequently necessary to place a pin in'the bore in order to prevent the excessive fiattening of the steel closing the bore, and for the purpose of readily removing such pins, l have provided upon the movable member 61 a suitable device to remove pins which may have become stuck in the steel due to the compression of the metal around them. This mechanism consists generally of the lever 91 pivoted as at 92 in a groove 93 in the member 61. The lower endof the lever 91 is forked and the bottom of the forked portion is formed at an angle to the axis of the lever whereby a sharp edge adjacent one side of thelever is presented. This sharpcued edge which is here numbered 94rlies adjacent the lower side of. the lever 91 and upon the low wing of the men'iber 6i by closing of the clamp; this harpened edge 94; is i brought in contact with a pin indicated 95 in Fig. 7, and upon further movemen' the closing direction'of the clamp member 61, the pressure transmitted to the lever causes the same to more nearly assume a horizontal position and extract the pin. T0

'maintain the lever in pin gripping position when not in use, a spring is inserted inthe socket 96 formed above the groove 93 and acts upon a follower 97 which it forces into a depression 98 on the lever 91. By reason 9 I be Elli ill)

as best shown in Fig. 5, a. motor 'ylinder 101 slidably mounted in a suitable guide 102 secured to the frame. There protrudes from the rear end of the cylinder a stem 103, see Fig. 10, which forms a part of a valve 105, see 9. The latter is disposed in a pressure fluid che hereinafter more fully described and admits fluid by way of suitable passages 106 to the motor which will run continuously until the pressure upon the motor is removed. In order to prevent loss of the pinning tool 107, a suitable tool retainer 108 is provided, this comprising a depending arm provided with a. vertical fork at the forward end thereof surrounding the tool. If it be desired to remove the tool for any purpose, the retainer member is tilted upward about a pivot 110 and the tool may be drawn straight out. It will. be observed from Figs. 9 and 10 that when the valve 105 is in forward position, it closes off communication between the valve chest 153, hereinafter described, and the passage 106 therein, but that when it is moved bacl wardly fluid is permitted to flow around the head of the valve member and to secure entrance into the passage 106 and so to the motor 101. Upon closure of the valve, however, the air supply is cut off.

The fluid distribution system of my improved mechanism is c onstructed as will next be described. The frame is provided adjacent the rear end of one side thereof with a supply chest generally indicated by 120 and to this chest a live fluid, preferably compressed air, connection 121 is led. The lower portion of the live fluid chest is provided with an oil pocket 122 and air in passing to a valve chest 120 blows over the top of the oil and entrains a small portion thereof, thereby assistingin the supply of lubricant to the working parts. lNithin the valve chest 120 which communicates by means of a passage 123, see Fig. 9, with the fluid pressure supply chest 120, is arranged a valve 124 which is generally rectangular in shape and which is further provided with a U-shaped passage 125 extending therethrough, and opening at the lower face.

thereof, that is, the face adjacent the valve seat. This valve is reciprocable across a valve seat 126 in which are formed a series of ports 127, 128, 129, and 130, these ports leading respectively to the foot valve, later described, and to the clamping motor, the dolly actuating motor, and to the exhaust. The exhaust passage leadsdirectly to a chamber 3 formed in the interior of the frame which constitutes an exhaust reservoir. With the parts in the position shown in Fig. 11 the clamp mechanism is connected with the exhaust, the horizontal hammer or dolly hammer supply is closed and the port 127 which leads to the foot valve is open, as is the case at all times as the limited length by the valve 136, seated upon the valve seat 134, is provided with a connection 138 which connects with the pipe 27 leading to the valve chest 24 of the vertical motor. The foot valve 136 is operated by a treadle 140 which is pivoted at 141 to the frame and operates a valve stem 142 of the foot valve 130. To prevent accidental operation of the treadle 140, I have provided an inverted U-shaped shield 143 covering the treadle 140 and supported by the bracket 144 projecting from theside of frame 1.

To operate the valve 124, I employ a valve stem 146 which is actuated by a bell-crank lever 147 provided with an operating handle 148 projecting to the front and one side of the frame 1 and also provided with a depending arm 149 adapted to cooperate with a vertical stop member 150 secured to the lower cross head 64 of the clamp mechanism; In what may be called first position, the valve 124 is in approximately the position shown in 11 and maintains both ports 128 and 129 closed, that is, both the clamp operating and the dolly motor controlling connections are closed to the live fluid. When the valve is in this position, the lever 148 is raised considerably from the position disclosed and the lever 149 is at an equal distance on the opposite side of the vertical member 150 from that which it now occupies to the rear of that lever. It will be further noted that with the parts in that position, the clamp mechanism is in open position, the pistons thereof being at the extreme left hand ends of their cylinders and the clamp raised as high as possible. Accordingly, the member 150 is above and to the left of the bottom of arm 149. It should be noted however that in another position of the arm and accordingly the valve, port 128 is adapted to be connected by means of a. suitable passage with the port 151 communicating with the large cylinder bore 81 and through which livefluid is passed to act upon the piston 83and force piston 83 against the pressure on piston 84 over to the other end of its stroke. hen the lever 148 is depressed, it can only move a certain distance, namely, until the arm 149 thereof collides with the member 150 and during this movement the valve 124 is permitted to move only to a sufficient degree to fully open the port 128 leading to the clamp- I her 3 conductedthrough a port 165.

ing mechanism. Accordingly, further move-.

ment is impossible until the clamp is closed;

and the valve cannot be movedso far as to' start the dolly motor by the vadmission of fluid to the port 129 until after the drill steel which is to be operated upon by the dolly is securely clamped by the clamping mechanism. It will thus beseen that danger of injury, due to actuation of the dolly prior to the clamping of the steel is avoided. It will be noted also that the valve chest is provided with an upwardly extending chamber 152 which communicates with a chamber .153 in which the valve 105 is located and which conducts the supply of air to the hole opening pinningmechanism.

The next feature to be observed is the combined exhaust distribution and luhricati'on system. As was pointed out, the interior of the frame contains an exhaust fluid storage chamber 3 and the exhaust from the clamp is conducted thereto by way of ports 128, passages inthe valve 125, and. the haust port 130. The exhaust from the dolly motor is conducted to this chamber by way of the port 160. From the exhaust pass 161' leading from the vertical swag motor there leads a port 163 which is adapt edto blow scale or other depo from the face of the anvil block or die 11. An annular chamber surrounding the piston 25' is also provided in conununication'withthe passage 161 and from this chamber a channel loads, as shown at 16%, through the frame member 15 to the point where it may serve to blow the scale oil the face of the clamping and gaging dies. The clamping dies are cleansed by an air blast from chanr An additional port 165 s provided to keep the seat ttor die 37 clean. The oil sump located in the chr iiber adapted to provide by means of the passa j t 166 and 166 a llow o't oiv to lubricate the clamping mechanism the cross head other parts.

A further live fluid passage leads out of the upper side ot the smaller cylinder 82 and goes upwardly to the steel blowing valve 167 the details of whose construction are lest shown in 4. It will be obvious from an inspection of this figure that upon the application of the hollow steel against he end of the valve 16.7 the same will be forced inwardly and air will be admitted by way of a l-pass are 168,. and will serve to blow out the hole. This will serve to blow out scale when the work on the steel is completed. It shouldbenoted that when the clanip is in released position, the

member 18 carrying the spring; 12 is raised above the dolly guiding member 89 and will permit the latter to be swung upward on its pivot for the purpose of changing the dolly or for any other purpose. A suitable .tionary jaw, a movable jaw, said jaws stitutlnp; a v se and cooperating gargnr hose provided with a blowing valve, indi cated generally by 170, is connected to the live air chamber in any suitable manner.

To lubricate the vise rods, I have provided a pair of annular passages 171 surrounding them adjacent the top of the frame, these being connected by a crosspas sage 17 2 with the exhaust chamber 3. There is also a U-shaped passage formed in piston 84 to which oil laden exhaust is supplied by means of a passage 173, the oil deposited in the passage overflowing the lower arm of the U and lubricating cylinder 82. A lat eral connection leads from port 173 to lubricate the hand lever and the connection thereto of the valve actuating rod; This is shown at 173 in Fig. 1. Suitable lubricant conducting passages 175 lead from chamber 3 to the lower dolly guide 38. To lubricate the loot lever pivot, I have arranged an oil pocket 176 in the short arm thereof and'a passage 177 leading therefrom to the pivot, lubricant carried by the live fluid passing; thereto by flowing down the valve stem 1 12.

The upper vertical die is lubricated by the oil entrained by the exhaust air flowing.

down around piston 25 To lubricate, the

auide tor the motor cylinder 101, I have led a passage 178 lr'o1n the annular passages spirit or the scope ofthe appended claims.

lVhat I claim as new and desire to secure by Letters Patent is 1. In a drill sharpening machine a sta- C011- dies mounted on said jaws and operated upon relative movemen ttherebetwt-iou.

2. In a drill sl'larpemng' machine, stationary rnd movable,nieinbers,constituting: the jaws of a vise, and adjustable gaging means secured to said members and operable upon movei ent thereof.

3. In a drill sharpening machine, a stationary jaw, a movable jaw, said jaws constituti the jaws a v sa, and Q i means secured to said jaws comprising; a fixed die member and an adjustable die member.

LA forging machine comprising an oil sump having an impart-crate bottom; mecha through said passage contained therein, said means to said mechanism, and means for preventing the lubricant contained in said sump exceeding a predetermined limit but adapt-- ed to keep lubricant therein until said limit is reached independently of said mechanism.

5. In a forging machine, a hollow base, a plurality of pneumatic tools adapted to be selectively actuated, exhaust means for said tools discharging into the interior of said base, and fluid pressure conducting means for said tools extending into the interior of the base and including a valved fluid pressure conducting pipe leading through the base.

6. In a forging machine, a base, a movable clamping member, a power actuated reciprocable member, a toggle link connected to said movab e and reciprocablemembers, a second toggle link connected to said base and to said other link intermediate the points of connection thereof to said movable and reciprocable members, and means directly engaging one of said toggle links for limiting movement thereof.

7. In a forging machine, a base, a vise having a movable jaw, and operating mechanism therefor including a reciprocating member, a member connected to and movable with said jaw, a link having pivotal connections with said members, and asecond link having a depression therein. for receiving one of said pivots and having a pivotal connection with said first named link and a pivotal connection with said base above said first named pivotal connections, said links being movable substantially into alinement whereby the lower of said first named pivots. the pivotal connection between said links and the pivotal connection of said second link with the base may lie substantially in a single plane.

8. In a forging machine, a base, a vise having a movable jaw and operating mechanism therefor including a reciprocating member operable in one direction by action of fluid pressure upon one end. thereof, and in the opposite direction by fluid pressure intermittently applied to the opposite end thereof, a member connected to and movable with said jaw, a link having pivotal connec tions with said members, and a second link having a pivotal connection with said first named link and a pivotal connection with said base above said first named pivotal connections, said parts being constructed to permit said last two pivotal connections and one of said first two pivotal connections to lie substantially in a single plane when said jaw is in closed position.

9. In a forging machine, a base, a vise having a movable jaw, and operating mechanism therefor including a reciprocating member comprising differential pistons. cylinders for said pistons. means for supplying fluid pressure constantly to the smaller one of said pistons, means for intermittently supplying fluid pressure to the larger of said pistons, a member connected to and movable with said aw, a link having pivotal connections with said members, and a second link having a pivotal connection with said first named link intermediate its ends and a pivotal connection with said base above said first named connections, said parts being constructed to permit at least three of said pivot points to be substantially in a single plane when said jaw is in closed position.

10. A forging machine having clamping means, relatively movable piston and cylinder elements for producing movement of the same to clamping position and return movement to separated position, and means for limiting movement thereof including a dashpot other than the relatively movable pis ton and cylinder elements.

11. A forging machine having clamping means, relatively movable cooperating piston and cylinder elements for producing movement of the same to clamping position and return movement to separated position. and means for limiting movement thereof including other cooperating piston and cylinder elements adapted to actas a dash pot, one of said latter elements being movable with said first mentioned piston.

12. A forging machine having clamping means, relatively movable cooperating piston and cylinder elements for producing movement of the same to clamping position and return movement to separated position, and means for limiting movement thereof including other cooperating piston and cylinder elements adapted to act as a dash pot, one of said latter elements being movable with said first mentioned piston, and means whereby certain of said elements are adapted to be continuously urged in a direction to open said clamping means.

13. A forging machine having clamping means, relatively movable cooperating piston and cylinder elements for producing movement of the same to clamping position and return movement to separated position. and means for limiting movement thereof including a further piston and cylinder adapted to act as a dashpot, said latter piston being movable with said other piston.

14. A forging machine having clamping means comprising a reciprocalole member, power means for moving said reciprocalole member through a complete cycle, and means distinct from said power means for substantially gradually checking the opera tion of said power means when said movable member reaches a predetermined position.

15. A forging machine having clamping means comprising a movable member, power means for actuating said movable member,

means for substantially gradually checking the operation of said power means when said movable member reaches a. predetermined position, and means for positively limiting the movement of said clamping member.

16. A for ing machine comprising a base,

a movable clamping meniberthereon, means for actuating said member including opposed actuators of different force, the actuator of lesser force including a cylinder and piston, a second piston having a fixed relation to said other piston, and .a cylinder adapted to cooperate with said second piston to provide a dashpot action.

17. A forging machine comprising a base, a movable clamping member thereon, means for actuating said member including a piston and a cylinder, a second piston having a fixed relation to said other piston, and a cylinder adapted to cooperate with said second piston to form, a substantially closed chamber between the adjacent faces of said second piston and cylinder only when said first mentioned piston has substantially reached one of its limits of movement.

18. A forging machine comprising a base,

a clamping member, means for actuating,

said member including a plurality of coaxial piston and cylinder elements, and means for lubricating one of said cylinders including a lubricant supply passage, and a second passage in the piston which cooperates with said cylinder to conduct lubricant thereto, said passages being relativelyinovable but adapted to allow lubricant to be supplied to said second mentioned passage.

19. A forging machine comprising a base, a clamping member, means for actuating the same including a relatively movable piston and cylinder, means for lubricating said piston and cylinder including an oil supply passage having fixed relation to said base, and a passage to receive a supply of lubricant therefrom when said piston and cylinder are in a predetermined position of their relative movement.

20. A forging machine compr sing a base,

clamping means carried thereby and means for actuating the same including relatively movable piston and cylinder elements adapt ed to remain in a predetermined fixed position when said clamping means is operative, and means forlubricating said elements ineluding means having relatively movable oil supply passages adapted to allow oil flow from one to the other only while said elements occupy said predetermined position.

In a forging machine, a vise having a movable jaw, and operating mechanism therefor including a plurality "of spaced cylinders, one of said cylinders being of greater diameter than the other thereof, ainember comprising pistons fitting said cylinders, a i dash pot surrounding the mouthof one of said cylinders, a plunger coa'xialwith said able with said jaw, a link having pivotal connect n with said members, and a second link having a pivotal connection with said first named link and a pivotal connection vith said hi so above said first named pivotal connections.

In a forging machine, a vise having a nio-srle jaw, and operating mechanism tncrelcr including a reciprocating member, said member comprising a plurality of differential pistons connected together by parallel spaced member, a member connected to and movable with said jaw, a link having pivotal connection with said" last mentioned member and with said parallel spaced members, and a second link having pivotal connection with said first named link intelniediate its ends and a pivotal connection with said base above said first named pivotal connection to permit at least three of said pivot points to be in a substantially straight line.

23. a forging machine, a base, a vice h ving a n'iovable jaw, an operating mechar therefor including a reciprocating n nber, said member comprising a pair of dillerential pistons, parallel spaced members connecting said pistons, a member connected to and movable with said jaw, a link having a forked end pivotally connected with said parallel spaced members and connected at its other end to the member connected, to

aw, and a second link having a pivotal connection with said first named link intern'iediate the forked portion and the pivots there and a pivotal connection with said base above said first named pivotal connections.

2%. In a holder having a movable section operatively connected to said base, a movable vise jaw,

and resilient means connected at one end to vise aw and engaging said section with jaw and engaging said section for retainingv the latter in adjusted position.

27. In a forging machine, a base, a fixed men: or thereon, and a member movable relative thereto, said members carrying mating vise elen'ients and gaging elements, said latter elements being operable movement of said members.

28. In a forging machine, a base,.afixed forging machine, a base, a dolly upon relative member thereon, and a member movable relative thereto, said members carrying mating vise elements and adjustable gaging elenients, said latter elements being operable upon relative movement of said members.

In a forging machine, a base, a fixed member thereon, and a men'iber moxnole relative thereto, said members carrying mating vise elements and gaging elements, said gaging elements being parallel to and adjacent said vise elements and operable upon relative movement of said members.

30. In a forging machine, a base, a fixed member thereon and a member movable relative thereto, said members carrying mating vise elements and adjustable gaging elements, sai l gaging elements being parallel to and adjacent said vise elements and operable upon relative movement of said members.

31. In a forging machine, a base having a swaging hammer thereon, a pair of relatively movable members, vise jaw elements carried by said members out of alinement with said hammer, and gaging means carried by said members adjacent said vise jaw and operable upon relative movement of said members.

32. In aforging machine, a base having a swaging hammer thereon, a pair of relatively movable members, vise jaw elements carried by said members out of alinement with said hammer, gaging means carried by said members adjacent said vise jaw and operable upon relative movement of said members, and a pinning tool carried by one of said members parallel to said vise aw elements.

33. In a forging machine, a die block a seat therefor, and spring means acting in a line making a small angle with said seat for substantially positively always maintaining said die block normally on said seat.

34. In a forging machine, adie block, a seat therefor, said die block and seat being provided with mating undercut surfaces, and elastic means for substantially positively maintaining said undercut surfaces in en gagement.

In a forging machine, a die block provided with an undercut projection, a seat for said die block having an undercut recess adapted to receive said projection, and elastic means acting substantially perpendicular 1y to the plane of engagement of said recess and projection and adapted to substantially positively maintain the latter in engagement.

36. In a forging machine, a die block, a base therefor, an undercut shoulder on said base, a similar shoulder on said die block engaging said first named shoulder, and means for substantially positively maintaining said shoulders in engagement comprising a plunger engaging said the block, and a soring means releasably engaging said plunger.

37. In a forging machine, a die block, a

Le7a129 base therefor, an undercut shoulder on said base, a similar shoulder on said die block engaging said first named shoulder, and means for releasably maintaining said shoulders in engagement con'iprising a plunger, elastic means tending to move said plunger out of engagement wit-l said die block, and elastic means stronger than said first mentioned elastic means normally overcoming the latter and forcing said plunger into ongagement with said die bloclr.

38. In a fo" machine, a support, a movable men'iber thereon, means for holding said member in a predetermined position and permitting release thereof, said means including movable means, and yieldable means for actuating said n'iovable means to effect said. operations.

39. In a forging machine, a movable member, yieldably pressed s said member in a predetermined position, and means for yieldably pressing said. latter means to allow said member to be released, said yieldable means being necessarily completely yield 1g during said operations.

4:0. in a forging machine, a movable member, means for holding the same in a predetermined position, and yieldable means for moving said latter means in opposite directions to effect said holding action or to allow release of said holding means.

ll. in a forging machine, a movable member, means for holding the same in a predetermined position, yieldable means for controlling said holding means, and separate yieldable means for actuating said holding means to allow said member to be released.

42. In a forging machine, a movable member, means for holding the same in a predetermined position, yieldable means for controlling said holding means, and separate yieldable means for actuating said holding means to allow said member to be released, both of said yieldable means being adapted to be simultaneously operable.

43. In a forging machine, a base, a die block, yieldable i'neans for holding said. block in a predetermined position, and a second yieldable means adapted to release sa'd l1olding on said block to permit removal thereof from said predetermined position.

4-1. In a forging mechanism, an anvil die, a cooperating movable swaging die, means for effecting cooperation between said die: to effect a forging operation, means for cleansing said anvil die including a cleansing jet forming means having a discharge orince disposed in a position to direct a cleansing jet against said anvil die, and means for occluding said orifice when said movable die is in its position most closely adjacent to said anvil die.

45. In a forging mechanism, an anvil die,

a cooperating movable swaging die, said dies en a eable in a horizontal lane vasholding sage forming means extending above said plane and having a discharge orifice direct-. ed towards said planeycleansing fluid supply means for said passage forming means including a fluid reservoir having constant communication therewith, and means for controlling discharge from said orifice ineluding means for. closing the same on movement of said movable die towards said anvil die. I

46. In a forging mechanism, work holding means comprising relatively movable clamping dies, a motor for effecting'relative movement therebetween comprising a main cylinder and piston for effecting clamping and a smaller piston for releasmg sald clamping action, means for intermittently supplying pressure to act on said main piston and for constantly causing'the action of pressure on said smaller piston, and valve controlled cleaning jet means supplied with cleansing fluid past said smaller piston.

47. Inla forging machine, an anvil die,

a cooperating reciprocable swaging die,'

means for reciprocating said swaging die to effect a forging operation, and means for cleansing said anvil die including a cleansing jet formingmeans having adischarge orifice positioned to direct a cleansing jet against said anvil die and slidably covered and uncovered by said swagingdie during the reciprocation thereof. a

In testimony whereof I aflix my signature.

FRANK A. HALLEOK. 

